DOA K0338 AK46G Hydraulic Core Drill 4"-14" (U/W Capable) Product Guide
The DOA K0338 AK46G is a hydraulic core drill designed for drilling concrete and similar materials with core diameters ranging from 4" to 14". It effectively addresses the challenge of creating precise, clean holes in tough substrates for applications like utility installation, infrastructure repair, and construction projects that require accurate core extraction.
This hydraulic core drill is commonly used in various construction and industrial rental scenarios where reliable controlled drilling through concrete or reinforced materials is required. Its underwater capability allows for applications in wet environments or even submerged conditions, expanding its usability for marine infrastructure, bridge work, and other water-exposed projects. Equipped with a safety valve that stops rotation if the bit jams, it enhances operational safety and protects equipment during blockages. The integrated level gauge aids in maintaining vertical or horizontal drilling accuracy, while the on/off trigger includes a locking feature for secure operation when mounted on a drill rig.
Where This Is Used
- Concrete and masonry drilling on construction sites, both topside and underwater
- Marine and underwater infrastructure projects such as bridge supports and piers
- Utility installations requiring clean core holes for conduit, pipes, or anchors
Key Details
| Equipment Type | Hydraulic Core Drill |
|---|---|
| Operating Environment | Topside and Underwater (U/W Capable) |
| Power System Match | Hydraulic power unit with appropriate flow and pressure |
| Core Diameter Range | 4" to 14" core bits |
| Safety Features | Rotation stops automatically if drill bit jams |
| Setup Requirement | Level gauge for vertical/horizontal drilling, trigger lock for rig use |
| Post-Use Care | Rinse with clean fresh water after underwater use to remove salt, grit, and debris |
Selection Notes
When choosing a hydraulic core drill like the AK46G, key job considerations include the required core diameter and drilling depth, the nature of the drilling environment (wet versus dry), and compatibility with the hydraulic power unit’s flow and pressure ratings. For underwater applications, verify hose length and routing to allow clear, kink-free hydraulic supply and return lines to ensure consistent tool performance and operator access. The presence of a safety valve is a valuable feature that helps prevent damage should the drill bit become obstructed. Confirm that the core bits selected match the materials being drilled and fit within the 4" to 14" planner range.
Post-Use Care Notes
After completing underwater or wet drilling, thoroughly rinse the drill with clean fresh water rather than saltwater to prevent corrosion and debris buildup. This simple cleaning step helps maintain tool reliability and lifespan. Inspect hydraulic couplers, hose connections, and the locking trigger mechanism before the next use. This practice is especially important when the drill is used in harsh or submerged conditions. Regular checks and cleaning promote consistent operation and reduce the risk of unexpected downtime on the job.
DOA AK46 Hydraulic Core Drill – Professional Hydraulic Diamond Core Drill
The DOA AK46 Hydraulic Core Drill is a professional-grade hydraulic diamond core drilling tool designed for demanding concrete, masonry, utility, industrial, marine, and underwater drilling applications. Built for contractors who need reliable performance in harsh jobsite conditions, the AK46 delivers the power, safety, and durability required for both handheld core drilling and drill rig-mounted operation.
Available in two configurations, the DOA AK46 S and DOA AK46 G, this hydraulic core drill is engineered to match different drilling diameter requirements. The AK46 S is designed for smaller diameter holes and higher rotational speed, while the AK46 G provides the torque needed for larger diameter core drilling.
Key Features of the DOA AK46 Core Drill
- Professional hydraulic diamond core drill for concrete, masonry, and reinforced concrete
- Available as the AK46 S and AK46 G models
- Designed for handheld operation or drill rig mounting
- Safe for wet, harsh, and underwater drilling environments
- Lightweight body made from Ergal aluminum and stainless steel
- Low-vibration hydraulic motor for smoother drilling performance
- Automatic safety valve helps stop rotation if the bit jams
- Integrated level gauge for accurate hole alignment
- Ergonomic handles for improved control and operator comfort
- Excellent choice for utility, construction, industrial, and marine contractors
DOA AK46 S Core Drill
The DOA AK46 S is optimized for smaller diameter core drilling where higher drilling speed is required. This model is ideal for plumbing, electrical, mechanical, HVAC, utility, and construction applications where clean, accurate holes are needed in concrete or masonry.
- Recommended core bit range: 30–100 mm / 1.2–4 in.
- Speed at 20 L/min: 1,000 RPM
- Speed at 30 L/min: 1,500 RPM
DOA AK46 G Core Drill
The DOA AK46 G is designed for larger diameter core drilling applications that require increased torque. It is well suited for pipe penetrations, sewer connections, utility openings, marine construction, and heavy-duty concrete coring.
- Recommended core bit range: 80–160 mm / 3.1–6.3 in.
- Speed at 20 L/min: 400 RPM
- Speed at 30 L/min: 600 RPM
Hydraulic Core Drilling Advantages
Unlike electric core drills, the DOA AK46 hydraulic core drill is powered by hydraulic flow, making it a safer and more dependable option for wet jobsites, utility work, trench work, and underwater drilling. Hydraulic operation eliminates the risk of electric shock and allows the tool to perform reliably in environments where electric drills may not be suitable.
The hydraulic motor also provides smooth, controlled power with minimal vibration. This helps reduce operator fatigue, improve drilling accuracy, and protect sensitive structures during concrete and masonry drilling.
Built for Wet and Underwater Drilling Applications
The DOA AK46 is an excellent choice for applications where water exposure is unavoidable. Its hydraulic design makes it suitable for wet drilling, flooded excavations, marine construction, commercial diving work, bridge maintenance, dam repair, and underwater infrastructure projects.
For contractors searching for an underwater hydraulic core drill, the AK46 provides the reliability and safety needed for submerged drilling operations.
Automatic Safety Valve for Operator Protection
The DOA AK46 is equipped with an automatic safety valve designed to help protect the operator and the tool. If the diamond core bit becomes jammed during drilling, the valve helps stop rotation, reducing kickback and improving safety during handheld or mounted operation.
Ergonomic and Lightweight Design
The AK46 is built with a lightweight yet durable combination of Ergal aluminum and stainless-steel components. This construction provides strength, corrosion resistance, and a favorable power-to-weight ratio for professional jobsite use.
The ergonomic design includes an adjustable rear support handle and long side handle for better control during operation. The rear handle allows the operator to apply steady pressure using the chest or knee, helping reduce fatigue during longer drilling jobs.
Handheld or Drill Rig Mounted Operation
The DOA AK46 core drill can be used as a handheld hydraulic drill or mounted to a drill rig for more controlled and accurate coring. This flexibility makes it a practical solution for contractors who need one hydraulic core drill for multiple drilling applications.
For larger diameter or precision drilling, the AK46 can be paired with a compatible drill column to improve stability, alignment, and productivity.
Common Applications
- Concrete core drilling
- Reinforced concrete drilling
- Masonry core drilling
- Utility installation and maintenance
- Water and sewer line work
- Gas pipeline maintenance
- Pipe penetration drilling
- Bridge repair and maintenance
- Marine construction
- Dam and harbor maintenance
- Commercial diving operations
- Underwater core drilling
- Industrial maintenance
- Confined space drilling
- Historic building restoration
Technical Specifications
| Model | DOA AK46 S / DOA AK46 G |
|---|---|
| Tool Type | Hydraulic diamond core drill |
| Hydraulic Flow | 20–30 L/min |
| Operating Pressure | 140–180 bar |
| AK46 S Core Bit Range | 30–100 mm / 1.2–4 in. |
| AK46 G Core Bit Range | 80–160 mm / 3.1–6.3 in. |
| AK46 S Speed | 1,000 RPM at 20 L/min; 1,500 RPM at 30 L/min |
| AK46 G Speed | 400 RPM at 20 L/min; 600 RPM at 30 L/min |
| Core Bit Connection | External 1-1/4" BSP male / Internal 1/2" BSP female |
| Weight | Approx. 8 kg / 17.6 lbs. |
| Construction | Ergal aluminum and stainless steel |
Why Choose the DOA AK46 Hydraulic Core Drill?
The DOA AK46 Hydraulic Core Drill is built for professionals who need dependable drilling power in challenging environments. Its hydraulic drive system provides excellent reliability, low vibration, wet-jobsite safety, and the ability to work underwater. With two model options, operators can choose the right speed and torque range for their specific core drilling application.
Whether you are drilling small utility penetrations, larger pipe openings, reinforced concrete, masonry, or underwater infrastructure, the AK46 offers the performance and durability needed for professional hydraulic core drilling.
DOA AK46 Core Drill for Sale in the United States
Rental Tools Online is a trusted source for DOA hydraulic tools and equipment in the United States. We provide product support, technical guidance, hydraulic power unit recommendations, replacement parts assistance, and professional service for contractors, utility companies, municipalities, industrial maintenance teams, marine contractors, and commercial diving professionals.
Contact us today to request pricing, availability, hydraulic power unit compatibility, or assistance selecting the correct DOA AK46 S or DOA AK46 G hydraulic core drill for your application.
| SKU | 142399 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weight | 18 | ||||||||||||||
| Country of Manufacture | Italy | ||||||||||||||
| Mfr. Model Number | AK46G | ||||||||||||||
| Link to User Manual | No | ||||||||||||||
| Link to Schematics | No | ||||||||||||||
| Link To Catalog | No | ||||||||||||||
| Technical Specifications |
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| Free Shipping | No |
Product Questions
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